Abstract

Triangular-shaped ring ridge lasers (ridge trilasers) have been fabricated using quantum-well semiconductor laser material. The spectra of these ridge trilasers show single-wavelength operation above threshold confirming traveling-wave behavior in these lasers. Unidirectional operation is reported based on asymmetry between the clockwise and counterclockwise directions, in contrast to conventional unidirectional operation in ring lasers based on magnetic techniques.

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